[majewsky]

I have two systems with AMD GPUs: a desktop with a 2015 R9 Nano and a 2018 Thinkpad with a Ryzen APU. The amdgpu driver works perfectly on both of them. The Ryzen APU has one issue where you need to set `iommu=soft` in the kernel parameters to get it to boot, but that seems to be more related to the CPU than the GPU.

[chupasaurus]

I don't have that parameter set, everything works fine. Ryzen 2400G.

[majewsky]

Maybe it's got to do with the chipset? Not sure, I don't have any other Ryzens to compare against. But `iommu=soft` is strictly required on my system, otherwise the screen just stays black after the boot manager.